... 3,Maximum Current:18A-23A 4,MOSFET: 9 pipes. 48V/500W Electric Bike Controller 15USD/PCS Specifications 1,Voltage: 48V 2,Rated power ... MOSFET:12 pipes. 48V/800W Electric Bike Controller 18USD/PCS Specifications 1,Voltage: 48V 2,Rated power:500W. 3,Maximum Current:28A-33A ... (manually operation and automatic operation) 5,Electronic soft-brake function (E-ABS optional) 6,Limited speed 7,1:1 power-assisted ...